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King

  • 3 years ago

Help.............Triangle ABC is a right triangle with angle ACB as the right angle. Angle ABC =60 degrees and AB=10. Let P be randomly chosen inside triangle ABC and extend BP to meet AC at D. What is the probability that BD>5*sqrt(2) Help.............Triangle ABC is a right triangle with angle ACB as the right angle. Angle ABC =60 degrees and AB=10. Let P be randomly chosen inside triangle ABC and extend BP to meet AC at D. What is the probability that BD>5*sqrt(2) @Mathematics

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  1. King
    • 3 years ago
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    |dw:1320476146215:dw|

  2. shubham_khandelwal
    • 3 years ago
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    the answer must be 1/sqrt(3)

  3. King
    • 3 years ago
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    how?

  4. shubham_khandelwal
    • 3 years ago
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    answer |dw:1320476924776:dw|

  5. King
    • 3 years ago
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    how did u take as 15 and 45?

  6. King
    • 3 years ago
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    i never said that CBD is a right isosceles triangle

  7. shubham_khandelwal
    • 3 years ago
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    since we want hat BD> 5sqrt(2)........(I) we know that....10/sine(BDA) = BD/ sine(DAB) since.... sine(DAB) = 1/2 therefore..... BD = 5/ sine(BDA) put in equation no....(I) we get..... 5/sine(BDA)> 5*sqrt(2) yaha tak smjh me aa gaya kya sb kuch????

  8. King
    • 3 years ago
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    ya

  9. shubham_khandelwal
    • 3 years ago
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    so we get............ sin (BAD)<1/sqrt(2) or 180degre< BAD<135degree got it or not????

  10. King
    • 3 years ago
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    ok

  11. King
    • 3 years ago
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    From here i understood how to solve Thankx very very much fr ure help.......

  12. shubham_khandelwal
    • 3 years ago
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    now do u understand the figure that i have made....its the boundary line of the probability...that means in that figure if we move d to the right then we will get the desired probability....... understood????

  13. King
    • 3 years ago
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    And onee day hopefully like u i will be an IITIAN Yeah i understood THANX A LOT.......

  14. shubham_khandelwal
    • 3 years ago
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    listen tio the important fact........ur answer would be now....... area of triangle(CBD)/ area oof the triangle (DBA) this is the main thing....

  15. King
    • 3 years ago
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    ya kk

  16. shubham_khandelwal
    • 3 years ago
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    bye.....i'm leaving now...mujhe khana khane jana h aur bhi kuch kam h....i'll be back in two hrs now...do send me a request on facebook.......

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